56 ; Pentti Eskola. 
township near the York River, made by B. J. Harrington NÅ 
III represents the »titaniferous melanite» from ledmorite- 
pegmatite near Bad nah'Achlaise, Ledmore, Scotland, analy- 
zed by A. Gemmell ?). IV is the analysis of melanite from | 
nephelite-syenite on Alnö in Sweden. This analysis is made 
by Naima Sahlbom ?). Analysis V shows the composition 
of the melanite from peperino, Frascati ?). 
I shall restriet myself to these examples and not consider 
the titanium-bearing garnets proper, such as the varieties 
named schorlomite and iivaarite. 
I IT IIT IV MM 
SO 36.60 330 31.15 5-5 30:00 EE 
iOS 1.08 GON 6:73 0 
AlsOss 7 SO ars 8.20 SKI 8:30 
Hes03- 19:32 16.005 17:90 23.88 6) TOA 
FeO0 3.42 3:00 2.70 nd: 1.80 
MiOG OLE 1.30 n. d: 0:58: 22 
Mg0O 0.84 1.38. 1.80 = 0.47 
CaO-T 31:16 29.31 28:80: AS 32.61 
Naz;0 0.00 SE 1 68 2 ra 
K.0 0.00 oo | SR 2 — AR 
H30 — 0.29 0.63 = — 
100.38 99.58 - 100.81 99:9377=-H0106 
Here we see our andradite beside garnets of similar 
origin, i. e. such as have crystallized from magmas. But 
1) B. J. Harrington. Can. Rec. Sc:, Vol, VI, 1894—95, pp. 480—481, quoted 
by Frank D. Adams and Alfred E. Barlow, »Geology of the Haliburton and 
Bancroft Areas», Canada Departement of Mines. Memoir N:o 6, p. 252. 
?) Alexander Gemmell, »Chemical Analyses of Borolanites and related 
Rocks», Transactions of Edinburgh Geological Society. Vol. IX, part V, 
p. 419 (1910). 
3) A. G. Högbom, »Uber das Nephelinsyenitgebiet auf der Insel Alnö», 
Geol. För. Förhandl. 17, p. 145 (1895). 
+) A. Knop, »Ueber den Schorlomit von Kaiserstuhl>, Zeitschr. f. val I, 
p. 63 (1877). 
5) Calculated as KO. 
€) With a little FeO. 
